National Museum of Nuclear Science & History
C. L. Klein worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Waldrop arrived at Oak Ridge in early 1944, directly after receiving his Army basic training. At Oak Ridge, he worked at the Y-12 plant during the Manhattan Project.
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.